You can also run half-life if paranoia is installed under your half-life folder, then just click on "change game" and Paranoia should be on your list. Click on paranoia and it should launch the mod then just click new game or something like that.

great models in the mod , the spirit.dll should precache sound files used by models as shows this kind of messages :
SV_StartSound: common/body_knee.wav not precached (0)
SV_StartSound: weapons/melee_whoosh2.wav not precached (0)
SV_StartSound: spas12_pump.wav not precached (0)
SV_StartSound: spas12_insertshell.wav not precached (0)

i had other message that should get easy to correct : Warning: Unable to open sound/texts/%d_mozg.tga for transferError: server failed to transmit file 'sound/texts/%d_mozg.tga'
the sound/ should be a path error

the sound files are in a lot of format : 12000 , 16000 or 44100 hz from files i looked at because i had : "WARNING! ......wav is causing runtime sample conversion!" . GoldWave can resample files in batch mode : look for BatchProcessing at its website .